Locomotive head-light



(No Model.)

L. H. MGKEE.

LOGOMOTIVE HEAD LIGHT.

No. 379,539, Patent-ed Mar. 13, 1888.

N. PETERS. Fholvlmlognphcr. Wuhingwm 0.6.

UNITED STATES PATENT FFIQEQ LEANDER H. MOKEE, OF FRANKFORT, ASSIGNOR OF ONE-HALF TO H. H. MOKEE, OF ROME, AND \V. A. PAIGE, OF OOEYMANS, NEW YORK.

-LOC'OMOTlVE HEAD-LIGHT.

SPECIFICATION -forming part of Letters Patent No. 379,539, dated March 13, 1888.

Application filed June 30, 1887. Serial No. 242.997.

To all whom, it may concern.-

Be it known that I, LEANDER H. MOKEE, a citizen of the United States, residing at Frankfort, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Locomotive Head- Lights, of which the following is a specification, reference being bad therein to the accompanying drawings.

My invention relates to certain new and useful improvements in head-lights for locomotives. I

It is well known that with the ordinary headlight in common use in which the glass is secured by plastic material a great deal of delay and inconvenience is experienced in renewing or replacing the glass when the same becomes loose or broken from any-cause, it being a very usual and annoying occurrence with fast-running trains especially for the glass to work loose by reason of the plaster or putty around the edges cracking or falling out.

My invention is designed to obviate eutirely the difficulties and disadvantages attendant upon the common method of securing the glass in its extension; and I attain such object by providing a practical, efficient, and very simple arrangement for securing the glass without the use of plastic or other material that is liable to crack or become loose, and which is so constructed and arranged that the glass may be quickly and readily removed and a new one substituted should it be broken or cracked. 4

My invention is also designed to obviate the necessity of employing a flanged cap or case for the neck or extension of a locomotive headlight; and my invention consists in the novel construction and arrangement of parts that will be more fully hereinafter specified, and particularly pointed out in the claims appended.

In describing my device reference is made to the accompanying drawings, in which Figure 1 represents a vertical central sectional view through an extension or neck of a locomotive head-light showing my improvements attached thereto; and Fig. 2, a de- (No model.)

tached plan view of a portion of the follower or ring for holding the glass, showing the aunular groove in the same.

Referring to the annexed drawings by letter, A designates a neck or extension of an ordinary locomotive head-light, which is of the usual construction, it being provided with an annular flange, a, atits outer end. In this neck or extension is placed the disk of glass B, the same being approximately the same size as the interior diameter of the neck or extension at its outer end, and having interposed between it and. the flange a packing-ring of felt, rubber, or other flexible material. After the glass is placed in the extension in the manner stated another packing-ring similar to the first one is inserted, and on this ring in turn is placed a metallic ring or follower, 0, approximately the size of the glass disk, this follower being provided on its inner face with an annular groove or channel, b,which is semicircular in cross'section, the object of which will presently appear.

Passing through screw-threaded apertures in brackets c, riveted to theinterior of the extension or neck A,are two or more (preferably four) set-screws, D, whose ends are rounded and rest in the annular groove in the follower or ring. Upon the set-screws between their heads and the screw-threaded brackets are placed binding or lock nuts E, the objects of which are to securely hold the set-screws in place against jarring and loosening after they are once set.

The object of providing the follower with an annular groove in its bearing-face is to permit it to be placed in position in the extension irrespective of the positions of the setscrews, and also to provide a firm and positive bearing for the same. I

It will be observed that by simply loosening the set-screws the ring or follower and packing-ring may be removed and a new glass readily substituted for the broken one, the operation requiring but a brief space of time.

One of the important features of my invention consists in having the follower-ring G grooved and the ends of the setscrews rounded to seat themselves firmlyin said groove when the follower is held by them. I thus preserve the truism of the necessarily long screw-stems and positively hold the latter in proper position perpendicular to the plane of the follower and prevent this follower from displacement when subjected to sudden shocks and COHCUSSIODS.

Another important feature of my invention lies in the fact that Tarrauge the fastening devices forthe glass plate B an d also the packings wholly within the extension A of the lampcase, thus avoiding the possibility of their being casually loosened.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the extension A ofa locomotive head-light, and the inwardlyextended flat annular flange formed on said extension, of an annularly-grooved followerring, the glass and its packing between said follower and flange, and retaining set-screws arranged inside of the said extension, the rounded ends of the stems of which are adapted to fit in the groove in the follower, substantially as described.

2. The combination, with the flanged extension of a locomotive head-light, of the circular glass plate, its packing, the followerring annularly grooved, the set-screws and their brackets, and the bin-dingnuts, all arranged wholly within the said extension A, substantially as and for the purposes described.

In testimony whcreof I affix my signaturein presence of two witnesses.

LEANDER H. MOKEE.

Witnesses:

L. E. NIPE, JOHN HARRIS. 

